Single Binary, Multiple Providers: Lessons from Building an Autonomous Coding Agent

This practical account explains why Rust was chosen to build Akmon, a single-binary autonomous coding agent that runs identically across all environments—MacBooks, Linux servers, Docker, and air-gapped systems. The language's ownership model and async runtime effectively manage the inherent complexity of concurrent agent loops with streaming, conversation history, and real-time UI rendering. A unified LLM provider abstraction demonstrates how to support eight different backends (Anthropic, OpenAI, Groq, Azure, Bedrock, Ollama) without coupling the agent logic to any specific provider.